not and If p and q are statements then ‘p not and q', denoted by p ↑ q, is true unless both p and q are true. Since ‘not and' is cumbersome language, this is often referred to as ‘nand' in logic. The truth table is as follows:
not and
数学辞典收录了4151条数学词条,基本涵盖了常用数学知识及数学英语单词词组的翻译及用法,是数学学习的有利工具。